<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<style>
    .banner{
        position: absolute;
        left: 300px;
        width: 100px;
        height: 200px;
        background-color: red;
    }
</style>
<body>
<div class="banner"></div>
</body>
</html>